## Usage

```js
const Pkg = require('{%= name %}');
```

## API

Extends [cache-base][], please see the `cache-base` documentation for more details.

{%= apidocs("index.js") %}

### .set

```js
pkg.set(key, value);
```

Set property `key` with the given `value`.

**Example**

```js
// given {"name": "my-project"}
pkg.set('bin.foo', 'bar');

console.log(pkg.data);
//=> {"name": "my-project", "bin": {"foo": "bar"}}
```

### .get

```js
pkg.get(key);
```

Get property `key` from package.json.

**Example**

```js
// given {"name": "my-project"}
pkg.set('bin.foo', 'bar');

console.log(pkg.get('bin'));
//=> {"foo": "bar"}
```

### .has

```js
pkg.has(key);
```

Returns `true` if `package.json` has property `key`.

**Example**

```js
// given: {"name": "my-project"}
console.log(pkg.has('name'));
//=> true
console.log(pkg.has('zzzzzzz'));
//=> false
```

### .union

```js
pkg.union(key, val);
```

Create array `key`, or concatenate values to array `key`. Also uniquifies the array.

**Example**

```js
pkg.union('keywords', 'foo');
pkg.union('keywords', ['bar', 'baz']);

console.log(pkg.get('keywords'));
//=> ['foo', 'bar', 'baz']
```